Steam or other fluid pressure motor.



No. 722,722. Y 7 PATBNTED lMAR. 17,1903..

P. LAMPLOUGH.

STEAM OR OTHER FLUID PRESSURE MOTR.

APPLICATION FILED DB0. 14. 1001. No MODEL. v a SHEETS-SHEET 1 VV/TNESSES/A/l/,f/v TUR I @CAM/W. fha-DEREK.' A/VPL 006W.'

W A Y 5y H/S A TTURA/Er No. '722,722- v PATENTED MAR. 1'7, 1903.

FI LAMPLOUGH.

STEAM OR OTHER FLUID PRESSURE MOTOR.

APPLICATION FILED Imc. 14, 1901.

3 SHEETS-SHEET 2.

NO MODEL.

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- No. 722,722. PATRNTRD MAR. 17, 1903.

D. LAMPLOUGH.

' ASTRAMOR OTRRR FLUID PRESSURE MOTOR.

Y APPDOATION FILED DEO. 14, 41901. no MODEL. f

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Nifrnn TATES Arnim innen.

FREDERICK LAMPLOUGH, OF WILLESDEN, LONDON, ENGLAND.

STEAM OR OTHER FLUID PRESSURE MOTOR.

SPECIFICATION formingpart of Letters Patent N o. 722,722, dated March17, 1903. Application filed December 14, 1901. Serial No. 85,865. (Nomodel.)

To a/ZZ whom it may concern.-

Be it known that LFREDERICK LAMPLOUGH, engineer, a subject of the Kingof Great Britain, residing at 6 Scrubbs Lane, Cumberland Park,Willesden, in the county of London, England, have invented certain newand useful Improvements in Steam or other Fluid Pressure Motors, ofwhich the following is a specification. Y

This invention relates to steam and other iiuid pressure motors, and hasfor its chief object to so construct the same that they shall be light,compact, simple in construction, and very suitable for the propulsion ofroad-vehicles, steam-launches, and the like.

An important feature of the invention is the valve-gear, which isconstructed on the well-known Joy principle, but modified in such mannerthat the oscillatory parts participate only in a small arc of movement,so as to permit of the gear being located or in-v closed within acomparatively small chamber wherein the crank works.

Another important feature is a device for operating the actuating-shaftof the valvegear through the intervention of a screw which can bedisengaged when large adjustments of said shaft are to be eected.

Another important feature is that the motor is unprovided with the usualstuffing-boxes for the working parts, the only stuffing-boxes beingthose in which are mounted the inner ends of tubes and which serve asexpansionjoints therefor, as hereinafter described.

In the accompanying drawings, Figure l is a longitudinal section of themotor for Vuse with steam as the motive iiuid. Fig. 2 is a horizontalsection, and Fig. 3 an end view, of the same. Fig. 4 is a plan of thecrank-chamber. Fig. 5 is a longitudinal section similar to Fig. l,showing the parts in another position. Fig. 6 is an edge View, and Fig.7 a face view, of the device foradjusting the position of thevalve-gear.

A A are the working cylinders, of which there are two `in the exampleillustrated, arranged in alinement with each other and preferablycomposed of steel tubes connected with the central or body portion B,that constitutes the aforesaid crank-chamber. The said body portion Bcomprises a rectangular casing having internally-screW-threaded bossesBX B to -screw into said bosses.

receive the aforesaid cylinders A, which are correspondinglyscrew-threaded at A A to The body portion B is open at the top and sidesto facilitate the assembling of the parts it is destined to inclose,coverplates B B2 B2 being provided for closing the said openings. Thisportion B and its covers are preferably made of aluminium forsake oflightness.

c c are the valves for controlling the inlet and outlet of the steam toand from the working cylinders through the passages aa. These valves areof the piston type and work in stationary tubes a' c', which are mountedat theirl outer ends in steam-chests C C, having cavities c c2, theformer of which communicates with the exhaust-opening a2 and the latterof which communicates with the aforesaid passages ce a. Theinner ends ofsaid tubes are mounted in stuffing-boxes a3 a2, with which the bodyportion B is provided. Instead of these stufling-boxes(which serve asexpansionjoints) I may provide the said tubes with flanges and connectthem to the body portion .B by means of screws or otherwise. Each of thetubes is formed with ports a4 a5, the former of which communicate withthe cavities c2 in the steam-chests leading to the passages a and thelatter of which communicate with the cavities c in the steam-chestsleading to the exhaust-opening a2. f

A A arethe cylinder-end covers, which are preferably made of aluminiumand secured in any appropriate manner to annular flanges A2 A2, alsopreferably of aluminium,

screwed onto the outer ends of said cylinders.

The steam-chests AC O are also preferably made of aluminium andconnected with the annular flanges A2 in any appropriate manner. O O arethe end covers of the steam-chests, and which may also be of aluminium.The body portion B is intended to contain oil for lubricating the partsit contains, and its cover B is made capable of ready detachment forenabling access to be had to the interior when required. It will thus be.seen that all the working parts of the motor are effectually lubricatedand inclosed, so that it will be impossible for dust or other foreignmatter to reach said parts.

- The aforesaid piston-valves are carried by a hollow rod. c3, throughwhich the steam en- ICO tering the left-hand chest through the pipe c4can reach the right-hand chest. The piston-valves act as guides for thehollow valverod c3 and effectual] y prevent the motive Huid fromreaching the interior of the central casing through the tubes ct' andbecoming mixed with the oil within such casing. The said rod c3 isprovided with an adjustable block c5, to which one end of an oscillatorylever d, having its fulcrum at D, is connected. The opposite end of thisoscillatory lever is coupled by a link d to a lever d2, which isconnected at its upper end d3 to another link d4, which is in turnconnected with the free end of an arm d5, mounted on a shaft D. Thelower end d6 of the arm d2 is connected to an arm 0F, pivotallyconnected at d8 with the pistonrod e of the left-hand piston E. The freeend C19 of this arm 17 is connected to the end of a link d10, which ispivoted at d to the body portion B of the motor. The piston-rod e of theright-hand piston E' is connected to the left-hand piston-rod e at e2,and said righthand piston-rod c' is coupled at f to the crank F of theshaft F. I attach importance to the fact that the piston-rods overlap attheir inner ends and that they are connected t0- gether independently ofthe crank, to which only one of them is directly coupled. Thisarrangement enables the total length of the motor to be considerablyreduced and also facilitates the location of the valve-gear in thecomparatively small space provided within the central or body portion ofthe motor, as aforesaid. The said shaft D is capable of angular movementby means of the aforesaid adjusting device,which is situated within easyreach of the driver or motor attendant. This device comprises ahand-lever G, fixed to the valve-gear-actuating shaft D in anyappropriate manner to permit of these parts moving together. Thishand-lever is provided with a sliding frame g, carrying the screw g',which by a spring g2 is normally maintained in engagement with a toothedsegment H, stationarily mounted with respect to the said shaft D. Theaxle of the said screw g is furnished with a thumb-piece g3 for enablingit to be turned in its frame and by so doing to cause it, together withthe hand-lever G and the shaft DQ to travel in one or other direction inaccordance with the direction in which said screw is turned. By

this movement a fine adjustment of the valvegear can be edected. Thesaid hand-lever G is also provided with a pivoted handle G', by whichthe aforesaid frame g can be shifted away from the toothed segment H, soas to bring said screw g' out of gear with said segment, and thus enablethe hand-lever G to be shifted independently of the screw g when largeadjustments of the shaft D are required. On releasing the hand-lever andthe handle G the saidv spring g2 brings the screw g again intoengagement with the segment H, so that ine adjustments can then beeffected through said screw, as before stated. For the purpose ofmaintaining the said segment H in its stationary position it is formedwith a boss h, having lugs h h thereon, which are adapted to engage withcorresponding recesses in some fixed part of the motor-framing. Mountedona sleeve h2,

surrounding said shaft D', is a collar and a nut. This collar and theboss h grip between them the aforesaid motor-framing when said nut h2 isscrewed up, and thus keep the aforesaid lugs 71' in iirm engagement withtheir recesses and the segment stationary. By shifting the saidhand-lever G into either of its extreme positions the said valve-gearcan be so actuated as to alter the position of the valves and permit thesteam to drive the motor in a forward or a backward direction, or bymoving said handlever intointermediate positions by the screw g thevalve-gear can be set to cause any desired cut-off of the steam to beeected and the motor to be driven at the requisite speed in accordancewith the amount of work it has to perform.

What I claim, and desire to secure by Letters Patent of the UnitedStates, is-

1. In a motor, the combination with a pair of coaXially-arranged workingcylinders and motive-fluid-distributing valves, of a casing locatedbetween said cylinders for completely inclosing the crank and valveoperating re- Versing and expansion gear and having detachable top andside plates, of screw-threaded bosses on said casing for the cylindersto be screwed into, of fianged rings screwed on the outer ends of saidcylinders, of motivefiuid chests connected with said flanged rings, andof ported tubes connecting said motivefluid chests with the casingsubstantially as described.

2. In a motor, the combination with a pair of coaxially-arranged workingcylinders and motive-iiuid-distributing valves, of a casing locatedbetween said cylinders, of screwthreaded bosses on said casing for thecylinders to be screwed into, of iianged rings on the outer ends of saidcylinders, of motivefluid chests connected with said flanged rings, ofported tubes connecting said motive-fluid chests with the casing, ofpiston-valves working in said tubular and ported tubes, of a hollow rodcarrying said piston-valves, and permitting the motive uid of one chestto reach the other, of means for connecting said rod with the valve-gearinclosed in said casing, of piston-rods hinged to the pistons of theworking cylinders and of a length that their inner ends overlap, one ofsaid rods being coupled to the crank, of means for hinging saidpiston-rods together independently of the crank, of means for connectingthe valve-gear to one of the piston-rods, of a crank-shaft eX- tendinglaterally through one of the side plates of said casing, and of a shaftconnected with the valve-gear and extending laterally through theopposite side plate of said ICO casing for enabling the valve-gear to becontrolled from the exterior of the casing substantially as described.

3. In a motor, the combination with a pair of coaxially-arranged workingcylinders and motive-fluid-distributing valves, of a casing locatedbetween and connected with said cylinders for completely inclosin g thecrank and valve-gear, of piston-rods hinged to the pistons of theworking cylinders and of a length that their inner ends overlap, one ofsaid rods being coupled to the crank, of means for hinging saidpiston-rods together independently of the crank, of means for connectingthe valve-gear to one of the piston-rods and of means for controllingsaid valve-gear from the exterior of the casing substantially asdescribed.

4. The combination, in a motor having a pair of coaXially-arrangedworking cylinders, motive-iiuid-distributing valves and a casing locatedcentrally between and connected with said cylinders; of hingedpiston-rods overlapping at their inner ends within said casing andcoupled together independently of the crank to which one of them isconnected, of valve-gear, and inclosed in the aforesaid casing, of asliding hollow rod carrying the slide-valves, of motive-fluid chestswithin which said valves work, of ported tubes connecting saidmotive-duid chests with the central casing, of means for connecting thesaid valve-gear with the said sliding hollow rod, and of means foractuating said gear from the exterior of the central casingsubstantially as described.

5. In a motor having a pair of coaxiallyarranged working cylinders,motive-iiuid-distributing valves and a casing located centrally betweenand connected with said cylinders; the combination of the hingedpiston-rods having overlapping ends coupled together independently ofthe crank to which one of them is connected, of valve-gear comprising anarm mounted on a transverse shaft extending outside said central casing,a link coupling said arm to one end of alever whose opposite end isconnected with an arm on one of the piston-rods, the free end of whicharm is connected by a link to a fixed point, a link coupling said leverto one end of an oscillatory lever whose fulcrum is at a Xed point andwhose opposite end is connected to the sliding hollow valve-rod by anadjustable block, of piston-valves mounted at the ends of said hollowvalve rod, of motiveiiuid chests, and of ported tubes which connect saidmotive fluid chests with the central chamber and within which saidpiston-valves work, substantially as and for the purpose specified.

In testimony whereof I have hereunto set my hand, in presence of twosubscribing witnesses, this 21st day of November, 1901.

FREDERICK LAMPLOUGI-I.

Witnesses:

THos. C. WARDLE, WALTER J. SKERTEN.

